Make sure nested loop variables have different values

Question

I want to create an adjacency matrix from another metric matrix in Matlab. My program is as follow:

function [V] = adjacency(Z)
n= size(Z,1);
V = zeros(n);
k=1:n;
  for i = 1:n 
    for j = 1:n 
      if Z(i,j)<= max(Z(i,k),Z(j,k)) 
       V(i,j)=1;
       V(j,i)=1;
      else
       V(i,j)=0;
       V(j,i)=0;
      end
    end
  end
end

I don't know how to make the condition that k must be different to i and different to j.

Answer 1

for k=1:n;
  for i = 1:n 
    for j = 1:n 

      if(~(k==i || k==j))

          if Z(i,j)<= max(Z(i,k),Z(j,k)) 
            V(i,j)=1;
            V(j,i)=1;
          else
            V(i,j)=0;
            V(j,i)=0;
          end

      end

    end
  end
end